11/2÷ 0.4=1.35÷ x;12+3(x-1)=18;5x+1=3+3(1-x);x÷ 48=24÷ 32;x÷ 2.6=2.88÷ 15.6
问题描述:
11/2÷ 0.4=1.35÷ x;12+3(x-1)=18;5x+1=3+3(1-x);x÷ 48=24÷ 32;x÷ 2.6=2.88÷ 15.6
答
1>
11÷ /2x2.5=1.35÷ X
13.75=1.35÷ X
X=13.75÷ 1.35
除不尽
2>
3(X-1)=6
X-1=2
X=3
3>
5X+1=6-3X
8X=5
X=0.625
4>
X=24÷32x48
X=16
5>
X=2.88÷15.5x2.6
X=0.48
答
11/2÷ 0.4=1.35÷ x;11/2x=1.35×0.45.5x=0.54x=27/27512+3(x-1)=18;12+3x-3=183x=9x=35x+1=3+3(1-x);5x+1=3+3-3x8x=5x=5/8x÷ 48=24÷ 32;32x=24×482x=24×3x=36x÷ 2.6=2.88÷ 15.615.6x=2.88×2.612x=2...